2 * Defines for synchronous PPP/Cisco link level subroutines.
4 * Copyright (C) 1994 Cronyx Ltd.
5 * Author: Serge Vakulenko, <vak@cronyx.ru>
7 * Heavily revamped to conform to RFC 1661.
8 * Copyright (C) 1997, Joerg Wunsch.
10 * This software is distributed with NO WARRANTIES, not even the implied
11 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * Authors grant any other persons or organizations permission to use
14 * or modify this software as long as this message is kept with the software,
15 * all derivative works or modified versions.
17 * From: Version 2.0, Fri Oct 6 20:39:21 MSK 1995
22 #ifndef _NET_IF_SPPP_H_
23 #define _NET_IF_SPPP_H_ 1
25 #define IDX_LCP 0 /* idx into state table */
28 u_long opts; /* LCP options to send (bitfield) */
29 u_long magic; /* local magic number */
30 u_long mru; /* our max receive unit */
31 u_long their_mru; /* their max receive unit */
32 u_long protos; /* bitmask of protos that are started */
33 u_char echoid; /* id of last keepalive echo request */
34 /* restart max values, see RFC 1661 */
41 #define IDX_IPCP 1 /* idx into state table */
42 #define IDX_IPV6CP 2 /* idx into state table */
45 u_long opts; /* IPCP options to send (bitfield) */
47 #define IPCP_HISADDR_SEEN 1 /* have seen his address already */
48 #define IPCP_MYADDR_DYN 2 /* my address is dynamically assigned */
49 #define IPCP_MYADDR_SEEN 4 /* have seen his address already */
51 #define IPV6CP_MYIFID_DYN 8 /* my ifid is dynamically assigned */
53 #define IPV6CP_MYIFID_SEEN 0x10 /* have seen his ifid already */
54 #define IPCP_VJ 0x20 /* can use VJ compression */
55 int max_state; /* VJ: Max-Slot-Id */
56 int compress_cid; /* VJ: Comp-Slot-Id */
59 #define AUTHNAMELEN 32
63 u_short proto; /* authentication protocol to use */
65 #define AUTHFLAG_NOCALLOUT 1 /* do not require authentication on */
67 #define AUTHFLAG_NORECHALLENGE 2 /* do not re-challenge CHAP */
68 u_char name[AUTHNAMELEN]; /* system identification name */
69 u_char secret[AUTHKEYLEN]; /* secret password */
70 u_char challenge[AUTHKEYLEN]; /* random challenge */
76 #define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */
79 * Don't change the order of this. Ordering the phases this way allows
80 * for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to
81 * know whether LCP is up.
84 PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE,
85 PHASE_AUTHENTICATE, PHASE_NETWORK
89 /* NB: pp_if _must_ be first */
90 struct ifnet pp_if; /* network interface data */
91 struct ifqueue pp_fastq; /* fast output queue */
92 struct ifqueue pp_cpq; /* PPP control protocol queue */
93 struct sppp *pp_next; /* next interface in keepalive list */
94 u_int pp_mode; /* major protocol modes (cisco/ppp/...) */
95 u_int pp_flags; /* sub modes */
96 u_short pp_alivecnt; /* keepalive packets counter */
97 u_short pp_loopcnt; /* loopback detection counter */
98 u_long pp_seq[IDX_COUNT]; /* local sequence number */
99 u_long pp_rseq[IDX_COUNT]; /* remote sequence number */
100 enum ppp_phase pp_phase; /* phase we're currently in */
101 int state[IDX_COUNT]; /* state machine */
102 u_char confid[IDX_COUNT]; /* id of last configuration request */
103 int rst_counter[IDX_COUNT]; /* restart counter */
104 int fail_counter[IDX_COUNT]; /* negotiation failure counter */
105 int enable_vj; /* VJ header compression enabled */
106 struct callout_handle ch[IDX_COUNT]; /* per-proto and if callouts */
107 struct callout_handle pap_my_to_ch; /* PAP needs one more... */
108 struct slcp lcp; /* LCP params */
109 struct sipcp ipcp; /* IPCP params */
110 struct sipcp ipv6cp; /* IPv6CP params */
111 struct sauth myauth; /* auth params, i'm peer */
112 struct sauth hisauth; /* auth params, i'm authenticator */
113 struct slcompress pp_comp; /* for VJ compression */
115 * These functions are filled in by sppp_attach(), and are
116 * expected to be used by the lower layer (hardware) drivers
117 * in order to communicate the (un)availability of the
118 * communication link. Lower layer drivers that are always
119 * ready to communicate (like hardware HDLC) can shortcut
120 * pp_up from pp_tls, and pp_down from pp_tlf.
122 void (*pp_up)(struct sppp *sp);
123 void (*pp_down)(struct sppp *sp);
125 * These functions need to be filled in by the lower layer
126 * (hardware) drivers if they request notification from the
127 * PPP layer whether the link is actually required. They
128 * correspond to the tls and tlf actions.
130 void (*pp_tls)(struct sppp *sp);
131 void (*pp_tlf)(struct sppp *sp);
133 * These (optional) functions may be filled by the hardware
134 * driver if any notification of established connections
135 * (currently: IPCP up) is desired (pp_con) or any internal
136 * state change of the interface state machine should be
137 * signaled for monitoring purposes (pp_chg).
139 void (*pp_con)(struct sppp *sp);
140 void (*pp_chg)(struct sppp *sp, int new_state);
141 /* These two fields are for use by the lower layer */
146 #define PP_KEEPALIVE 0x01 /* use keepalive protocol */
147 /* 0x04 was PP_TIMO */
148 #define PP_CALLIN 0x08 /* we are being called */
149 #define PP_NEEDAUTH 0x10 /* remote requested authentication */
152 #define PP_MTU 1500 /* default/minimal MRU */
153 #define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */
156 * Definitions to pass struct sppp data down into the kernel using the
157 * SIOC[SG]IFGENERIC ioctl interface.
159 * In order to use this, create a struct spppreq, fill in the cmd
160 * field with SPPPIOGDEFS, and put the address of this structure into
161 * the ifr_data portion of a struct ifreq. Pass this struct to a
162 * SIOCGIFGENERIC ioctl. Then replace the cmd field by SPPPIOCDEFS,
163 * modify the defs field as desired, and pass the struct ifreq now
164 * to a SIOCSIFGENERIC ioctl.
167 #define SPPPIOGDEFS ((caddr_t)(('S' << 24) + (1 << 16) + sizeof(struct sppp)))
168 #define SPPPIOSDEFS ((caddr_t)(('S' << 24) + (2 << 16) + sizeof(struct sppp)))
176 void sppp_attach (struct ifnet *ifp);
177 void sppp_detach (struct ifnet *ifp);
178 void sppp_input (struct ifnet *ifp, struct mbuf *m);
179 int sppp_ioctl (struct ifnet *ifp, u_long cmd, void *data);
180 struct mbuf *sppp_dequeue (struct ifnet *ifp);
181 struct mbuf *sppp_pick(struct ifnet *ifp);
182 int sppp_isempty (struct ifnet *ifp);
183 void sppp_flush (struct ifnet *ifp);
186 #endif /* _NET_IF_SPPP_H_ */